This pic of Joel Madden with Mary Kate inside his band's tour bus while Nicole is at home with Harlow has awakaned rumours of a possible infidelity of Joel with the Olsen twin, but Mary Kate is good friends with Nicole and I don't believe that anything has happened, the matter of the question is that Mary Kate wants to revenge from Paris because she always steals her boyfriends but I'm afraid that she's mistaking the Madden twin...